1 /* $NetBSD: rpc_callmsg.c,v 1.16 2000/07/14 08:40:42 fvdl Exp $ */ 2 3 /*- 4 * Copyright (c) 2009, Sun Microsystems, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions are met: 9 * - Redistributions of source code must retain the above copyright notice, 10 * this list of conditions and the following disclaimer. 11 * - Redistributions in binary form must reproduce the above copyright notice, 12 * this list of conditions and the following disclaimer in the documentation 13 * and/or other materials provided with the distribution. 14 * - Neither the name of Sun Microsystems, Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived 16 * from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #if defined(LIBC_SCCS) && !defined(lint) 32 static char *sccsid2 = "@(#)rpc_callmsg.c 1.4 87/08/11 Copyr 1984 Sun Micro"; 33 static char *sccsid = "@(#)rpc_callmsg.c 2.1 88/07/29 4.0 RPCSRC"; 34 #endif 35 #include <sys/cdefs.h> 36 __FBSDID("$FreeBSD$"); 37 38 /* 39 * rpc_callmsg.c 40 * 41 * Copyright (C) 1984, Sun Microsystems, Inc. 42 * 43 */ 44 45 #include "namespace.h" 46 #include <assert.h> 47 #include <stdlib.h> 48 #include <string.h> 49 50 #include <rpc/rpc.h> 51 #include "un-namespace.h" 52 53 /* 54 * XDR a call message 55 */ 56 bool_t 57 xdr_callmsg(XDR *xdrs, struct rpc_msg *cmsg) 58 { 59 enum msg_type *prm_direction; 60 int32_t *buf; 61 struct opaque_auth *oa; 62 63 assert(xdrs != NULL); 64 assert(cmsg != NULL); 65 66 if (xdrs->x_op == XDR_ENCODE) { 67 if (cmsg->rm_call.cb_cred.oa_length > MAX_AUTH_BYTES) { 68 return (FALSE); 69 } 70 if (cmsg->rm_call.cb_verf.oa_length > MAX_AUTH_BYTES) { 71 return (FALSE); 72 } 73 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT 74 + RNDUP(cmsg->rm_call.cb_cred.oa_length) 75 + 2 * BYTES_PER_XDR_UNIT 76 + RNDUP(cmsg->rm_call.cb_verf.oa_length)); 77 if (buf != NULL) { 78 IXDR_PUT_INT32(buf, cmsg->rm_xid); 79 IXDR_PUT_ENUM(buf, cmsg->rm_direction); 80 if (cmsg->rm_direction != CALL) { 81 return (FALSE); 82 } 83 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_rpcvers); 84 if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) { 85 return (FALSE); 86 } 87 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_prog); 88 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_vers); 89 IXDR_PUT_INT32(buf, cmsg->rm_call.cb_proc); 90 oa = &cmsg->rm_call.cb_cred; 91 IXDR_PUT_ENUM(buf, oa->oa_flavor); 92 IXDR_PUT_INT32(buf, oa->oa_length); 93 if (oa->oa_length) { 94 memmove(buf, oa->oa_base, oa->oa_length); 95 buf += RNDUP(oa->oa_length) / sizeof (int32_t); 96 } 97 oa = &cmsg->rm_call.cb_verf; 98 IXDR_PUT_ENUM(buf, oa->oa_flavor); 99 IXDR_PUT_INT32(buf, oa->oa_length); 100 if (oa->oa_length) { 101 memmove(buf, oa->oa_base, oa->oa_length); 102 /* no real need.... 103 buf += RNDUP(oa->oa_length) / sizeof (int32_t); 104 */ 105 } 106 return (TRUE); 107 } 108 } 109 if (xdrs->x_op == XDR_DECODE) { 110 buf = XDR_INLINE(xdrs, 8 * BYTES_PER_XDR_UNIT); 111 if (buf != NULL) { 112 cmsg->rm_xid = IXDR_GET_U_INT32(buf); 113 cmsg->rm_direction = IXDR_GET_ENUM(buf, enum msg_type); 114 if (cmsg->rm_direction != CALL) { 115 return (FALSE); 116 } 117 cmsg->rm_call.cb_rpcvers = IXDR_GET_U_INT32(buf); 118 if (cmsg->rm_call.cb_rpcvers != RPC_MSG_VERSION) { 119 return (FALSE); 120 } 121 cmsg->rm_call.cb_prog = IXDR_GET_U_INT32(buf); 122 cmsg->rm_call.cb_vers = IXDR_GET_U_INT32(buf); 123 cmsg->rm_call.cb_proc = IXDR_GET_U_INT32(buf); 124 oa = &cmsg->rm_call.cb_cred; 125 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t); 126 oa->oa_length = (u_int)IXDR_GET_U_INT32(buf); 127 if (oa->oa_length) { 128 if (oa->oa_length > MAX_AUTH_BYTES) { 129 return (FALSE); 130 } 131 if (oa->oa_base == NULL) { 132 oa->oa_base = (caddr_t) 133 mem_alloc(oa->oa_length); 134 if (oa->oa_base == NULL) 135 return (FALSE); 136 } 137 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length)); 138 if (buf == NULL) { 139 if (xdr_opaque(xdrs, oa->oa_base, 140 oa->oa_length) == FALSE) { 141 return (FALSE); 142 } 143 } else { 144 memmove(oa->oa_base, buf, 145 oa->oa_length); 146 /* no real need.... 147 buf += RNDUP(oa->oa_length) / 148 sizeof (int32_t); 149 */ 150 } 151 } 152 oa = &cmsg->rm_call.cb_verf; 153 buf = XDR_INLINE(xdrs, 2 * BYTES_PER_XDR_UNIT); 154 if (buf == NULL) { 155 if (xdr_enum(xdrs, &oa->oa_flavor) == FALSE || 156 xdr_u_int(xdrs, &oa->oa_length) == FALSE) { 157 return (FALSE); 158 } 159 } else { 160 oa->oa_flavor = IXDR_GET_ENUM(buf, enum_t); 161 oa->oa_length = (u_int)IXDR_GET_U_INT32(buf); 162 } 163 if (oa->oa_length) { 164 if (oa->oa_length > MAX_AUTH_BYTES) { 165 return (FALSE); 166 } 167 if (oa->oa_base == NULL) { 168 oa->oa_base = (caddr_t) 169 mem_alloc(oa->oa_length); 170 if (oa->oa_base == NULL) 171 return (FALSE); 172 } 173 buf = XDR_INLINE(xdrs, RNDUP(oa->oa_length)); 174 if (buf == NULL) { 175 if (xdr_opaque(xdrs, oa->oa_base, 176 oa->oa_length) == FALSE) { 177 return (FALSE); 178 } 179 } else { 180 memmove(oa->oa_base, buf, 181 oa->oa_length); 182 /* no real need... 183 buf += RNDUP(oa->oa_length) / 184 sizeof (int32_t); 185 */ 186 } 187 } 188 return (TRUE); 189 } 190 } 191 prm_direction = &cmsg->rm_direction; 192 if ( 193 xdr_u_int32_t(xdrs, &(cmsg->rm_xid)) && 194 xdr_enum(xdrs, (enum_t *) prm_direction) && 195 (cmsg->rm_direction == CALL) && 196 xdr_rpcvers(xdrs, &(cmsg->rm_call.cb_rpcvers)) && 197 (cmsg->rm_call.cb_rpcvers == RPC_MSG_VERSION) && 198 xdr_rpcprog(xdrs, &(cmsg->rm_call.cb_prog)) && 199 xdr_rpcvers(xdrs, &(cmsg->rm_call.cb_vers)) && 200 xdr_rpcproc(xdrs, &(cmsg->rm_call.cb_proc)) && 201 xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_cred)) ) 202 return (xdr_opaque_auth(xdrs, &(cmsg->rm_call.cb_verf))); 203 return (FALSE); 204 } 205